Speed up meal cooked and eaten by Aussie (10)
I believe the answer is:
streamline
'speed up' is the definition.
(streamlining something makes it go faster)
'meal cooked and eaten by aussie' is the wordplay.
'cooked' indicates an anagram (letters cooked into a new form).
'and eaten by' is an insertion indicator.
'aussie' becomes 'Strine' (informal term for the Australian accent).
'meal' anagrammed gives 'eaml'.
'eaml' inserted within 'strine' is 'STREAMLINE'.
(Other definitions for streamline that I've seen before include "Make (a body) less resistant to fluid flow" , "Improve efficiency" , "Get more efficient" , "Smooth" , "run things more efficiently" .)